syslinux: fix boot hang when host-gcc is 5.3

Syslinux uses the host version of gcc to build to bootloader. On systems
with gcc 5.3, this results in a bootloader that hangs. This issue has
been addressed in upstream syslinux, but an official release has not
been made yet. This commit adds the upstream patch to fix the issue.

Most likely fixes bug #8866.

Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

boot/syslinux/0001-Fix-gcc-5-ALIGN-causing-Boot-error.patch

@@ -0,0 +1,76 @@
+commit e5f2b577ded109291c9632dacb6eaa621d8a59fe
+Author: Sylvain Gault <sylvain.gault@gmail.com>
+Date:   Tue Sep 29 02:38:25 2015 +0200
+
+    bios: Fix alignment change with gcc 5
+    
+    The section aligment specified in the ld scripts have to be greater or
+    equal to those in the .o files generated by gcc.
+    
+    Signed-off-by: Sylvain Gault <sylvain.gault@gmail.com>
+    Tested-by: poma <pomidorabelisima@gmail.com>
+    Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
+    Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
+
+diff --git a/core/i386/syslinux.ld b/core/i386/syslinux.ld
+index 7b4e012..7390451 100644
+--- a/core/i386/syslinux.ld
++++ b/core/i386/syslinux.ld
+@@ -266,7 +266,7 @@ SECTIONS
+ 		__text_end = .;
+ 	}
+ 
+-	. = ALIGN(16);
++	. = ALIGN(32);
+ 
+ 	__rodata_vma = .;
+ 	__rodata_lma = __rodata_vma + __text_lma - __text_vma;
+@@ -361,7 +361,7 @@ SECTIONS
+ 		__dynamic_end = .;
+ 	}
+ 
+-	. = ALIGN(16);
++	. = ALIGN(32);
+ 
+ 	__data_vma = .;
+ 	__data_lma = __data_vma + __text_lma - __text_vma;
+@@ -377,7 +377,7 @@ SECTIONS
+ 	__pm_code_dwords = (__pm_code_len + 3) >> 2;
+ 
+ 	. = ALIGN(128);
+-	
++
+ 	__bss_vma = .;
+ 	__bss_lma = .;		/* Dummy */
+ 	.bss (NOLOAD) : AT (__bss_lma) {
+diff --git a/core/x86_64/syslinux.ld b/core/x86_64/syslinux.ld
+index 1057112..bf815c4 100644
+--- a/core/x86_64/syslinux.ld
++++ b/core/x86_64/syslinux.ld
+@@ -266,7 +266,7 @@ SECTIONS
+ 		__text_end = .;
+ 	}
+ 
+-	. = ALIGN(16);
++	. = ALIGN(32);
+ 
+ 	__rodata_vma = .;
+ 	__rodata_lma = __rodata_vma + __text_lma - __text_vma;
+@@ -361,7 +361,7 @@ SECTIONS
+ 		__dynamic_end = .;
+ 	}
+ 
+-	. = ALIGN(16);
++	. = ALIGN(32);
+ 
+ 	__data_vma = .;
+ 	__data_lma = __data_vma + __text_lma - __text_vma;
+@@ -377,7 +377,7 @@ SECTIONS
+ 	__pm_code_dwords = (__pm_code_len + 3) >> 2;
+ 
+ 	. = ALIGN(128);
+-	
++
+ 	__bss_vma = .;
+ 	__bss_lma = .;		/* Dummy */
+ 	.bss (NOLOAD) : AT (__bss_lma) {