realtek: rtl931x: drop CONFIG_NO_EXCEPT_FILL hack

On RTL931x builds, CONFIG_RTL931X was used as a stand-in for
CONFIG_NO_EXCEPT_FILL.  Now that the latter is always selected for
devices in the realtek target, this hack can be removed. Resulting
device images are binary identical.

Signed-off-by: Sander Vanheule <sander@svanheule.net>

target/linux/realtek/patches-5.10/312-rt9313-support.patch

@@ -43,23 +43,6 @@ Submitted-by: Birger Koblitz <git@birger-koblitz.de>
  ifdef CONFIG_32BIT
  bootvars-y	+= ADDR_BITS=32
  endif
---- a/arch/mips/kernel/head.S
-+++ b/arch/mips/kernel/head.S
-@@ -60,12 +60,14 @@
- 	.endm
- 
- #ifndef CONFIG_NO_EXCEPT_FILL
-+#ifndef CONFIG_RTL931X
- 	/*
- 	 * Reserved space for exception handlers.
- 	 * Necessary for machines which link their kernels at KSEG0.
- 	 */
- 	.fill	0x400
- #endif
-+#endif
- 
- EXPORT(_stext)
- 
 --- a/arch/mips/kernel/vmlinux.lds.S
 +++ b/arch/mips/kernel/vmlinux.lds.S
 @@ -55,7 +55,11 @@ SECTIONS

target/linux/realtek/patches-5.15/312-rt9313-support.patch

@@ -43,23 +43,6 @@ Submitted-by: Birger Koblitz <git@birger-koblitz.de>
  ifdef CONFIG_32BIT
  bootvars-y	+= ADDR_BITS=32
  endif
---- a/arch/mips/kernel/head.S
-+++ b/arch/mips/kernel/head.S
-@@ -60,12 +60,14 @@
- 	.endm
- 
- #ifndef CONFIG_NO_EXCEPT_FILL
-+#ifndef CONFIG_RTL931X
- 	/*
- 	 * Reserved space for exception handlers.
- 	 * Necessary for machines which link their kernels at KSEG0.
- 	 */
- 	.fill	0x400
- #endif
-+#endif
- 
- EXPORT(_stext)
- 
 --- a/arch/mips/kernel/vmlinux.lds.S
 +++ b/arch/mips/kernel/vmlinux.lds.S
 @@ -55,7 +55,11 @@ SECTIONS