Set visibility of global symbols used in ARM specific assembly file to
internal.

Taken from Debian:
https://salsa.debian.org/multimedia-team/mpeg2dec/blob/master/debian/patches/60_arm-private-symbols.patch

--- mpeg2dec.orig/libmpeg2/motion_comp_arm_s.S
+++ mpeg2dec/libmpeg2/motion_comp_arm_s.S
@@ -23,7 +23,8 @@
 
 @ ----------------------------------------------------------------
 	.align
-	.global MC_put_o_16_arm
+	.global   MC_put_o_16_arm
+	.internal MC_put_o_16_arm
 MC_put_o_16_arm:
 	@@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
 	pld [r1]
@@ -83,7 +84,8 @@ MC_put_o_16_arm_align_jt:
 
 @ ----------------------------------------------------------------
 	.align
-	.global MC_put_o_8_arm
+	.global   MC_put_o_8_arm
+	.internal MC_put_o_8_arm
 MC_put_o_8_arm:
 	@@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
 	pld [r1]
@@ -152,7 +154,8 @@ MC_put_o_8_arm_align_jt:
 .endm
 
 	.align
-	.global MC_put_x_16_arm
+	.global   MC_put_x_16_arm
+	.internal MC_put_x_16_arm
 MC_put_x_16_arm:
 	@@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
 	pld [r1]
@@ -244,7 +247,8 @@ MC_put_x_16_arm_align_jt:
 
 @ ----------------------------------------------------------------
 	.align
-	.global MC_put_x_8_arm
+	.global   MC_put_x_8_arm
+	.internal MC_put_x_8_arm
 MC_put_x_8_arm:
 	@@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
 	pld [r1]
ff/gnu/services/messaging.scm?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/messaging.scm'>
<input type='hidden' name='id' value='40e513fe54f01a1e2d775000cb512e3f3755fe8f'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f'>root</a>/<a href='/guix/log/gnu?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f'>gnu</a>/<a href='/guix/log/gnu/services?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f'>services</a>/<a href='/guix/log/gnu/services/messaging.scm?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f'>messaging.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/messaging.scm?id=40e513fe54f01a1e2d775000cb512e3f3755fe8f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-03-13 23:12:43 +0100'>2019-03-13</span></td><td><a href='/guix/commit/gnu/services/messaging.scm?id=59e80445882f8b0379e54916f89510c0deda6698'>Remove traces of "GuixSD".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-01-10 14:59:23 +0100'>2019-01-10</span></td><td><a href='/guix/commit/gnu/services/messaging.scm?id=65a67bf711b14bc7200f6730c0f173375ca12974'>services: Use 'define-deprecated' for service procedures.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-12-24 11:18:36 +0200'>2018-12-24</span></td><td><a href='/guix/commit/gnu/services/messaging.scm?id=dcad57d5fca43a111e1b314264171c80d4d9a75b'>services: Add quassel.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>