uclibc: fix sh2a option definition

The uClibc options for sh2a is SH2A, not SHA2, and this value should
be used for sh2a, not sh2.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uclibc/Config.in

@@ -240,7 +240,7 @@ config BR2_UCLIBC_MIPS_ISA
 config BR2_UCLIBC_SH_TYPE
 	string
 	depends on BR2_UCLIBC_TARGET_ARCH = "sh"
-	default SHA2 if BR2_sh2
+	default SH2A if BR2_sh2a
 	default SH3  if BR2_sh3 || BR2_sh3eb
 	default SH4  if BR2_sh4 || BR2_sh4eb