Eliminate Viper branding

Gets rid of references to the obsolete OS name. (Note that removing
the build system comment entirely makes sense, since there are no
other comments for anything else in the file.)

Change-Id: I4473b016c1c85be48ac9ab8d5b8f6a5b11dd58d0
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
diff --git a/arch/arc/core/fast_irq.s b/arch/arc/core/fast_irq.s
index 3a6969f..5405ed9 100644
--- a/arch/arc/core/fast_irq.s
+++ b/arch/arc/core/fast_irq.s
@@ -133,7 +133,7 @@
 
 	lr r3, [_ARC_V2_AUX_IRQ_ACT]
 
-	/* Viper on ARCv2 always runs in kernel mode, so assume bit31 [U] in
+	/* the OS on ARCv2 always runs in kernel mode, so assume bit31 [U] in
 	 * AUX_IRQ_ACT is always 0: if the contents of AUX_IRQ_ACT is not 1, it
 	 * means that another bit is set so an interrupt was interrupted.
 	 */
diff --git a/arch/arc/core/regular_irq.s b/arch/arc/core/regular_irq.s
index ab89a4a..85cadfb 100644
--- a/arch/arc/core/regular_irq.s
+++ b/arch/arc/core/regular_irq.s
@@ -96,7 +96,7 @@
 
 	asl r0, 1, r0
 
-	/* Viper on ARCv2 always runs in kernel mode, so assume bit31 [U] in
+	/* the OS on ARCv2 always runs in kernel mode, so assume bit31 [U] in
 	 * AUX_IRQ_ACT is always 0: if the contents of AUX_IRQ_ACT is greater
 	 * than FFS(AUX_IRQ_ACT), it means that another bit is set so an
 	 * interrupt was interrupted.
diff --git a/scripts/Makefile.preparch b/scripts/Makefile.preparch
index 4e45204..64fc724 100644
--- a/scripts/Makefile.preparch
+++ b/scripts/Makefile.preparch
@@ -32,7 +32,6 @@
 	cat $(srctree)/config/$(CONFIG_BSP_DIR)/ukernel/config1p.vpf;)
 endef
 
-#Specific source code generation for Viper
 misc/generated/sysgen/prj.vpf:	$(srctree)/config/$(CONFIG_BSP_DIR)/ukernel/config1p.vpf \
 				$(PROJECT_BASE)/$(VPFILE) \
 				include/config/auto.conf FORCE